Means for attaching brake-drums to the hubs of wheels of vehicles.



PATENTED DEC. 8, 1903 W. A. CORNELL MEANS FOR ATTAGHING BRAKE DRUMS TO THE HUBS 0P WHEELS 0P VEHICLES.

APPLICATION FILED JUN}: 23, 1903.

NO MODEL.

UNITED STATES WILLIAM ALBERT CORNELL, OF TOORAK, NEAR MELBOURNE,

l AUSTRALIA.

Patented December 8, 1903.

PATENT OFFICE.

VICTORIA,

SPECIFICATION forming part of Letters Patent No. 746, dated December 0 Application filed June 23. 1903.

To all whom it may concern.-

Be it known thatI, WILLIAM ALBERT 00R- NELL, a subject of the King of Great Britain, residing at No. 220 Williams road,Toorak, near Melbourne, in the State of Victoria and Commonwealth of Australia, have invented new and usefulImproved Meansfor Attaching Brake-Drums to the Hubs of Vehicle-VVheels, of which the following is a specification.

This invention relates tocertaiu new and useful improvements in means for attaching brake-drums to the hubs of vehicles, and aims particularly to provide new and novel means by which the brake-drum may be easily and quickly applied to the hub of avehicle or other wheel without mechanical skill and .without interfering with the hub at all.

These means consist'of the combination, with the brake-drum, the internal periphery of which is provided with a tapered screw-thread, of a tapered sleeve externally screw-threaded to receive the thread on the internal periphery of the drum and a liner, both sleeve and liner. being capable of circumferential compression.

Referring to the drawings, Figure 1 is an elevation showing portion of the hub of a bicycle-wheel with the drum in position. Fig. 2 is an end view of Fig. 1. Fig.3 is a sectional elevation of Fig. l on the line Z Z, Fig. 2. Fig. 4 is an isometric projection of the liner. Fig. 5 is an elevation, and Fig. 6 a plan, of the sleeve.

A is a liner or packings trip or band, and B a tapered sleeve, the latter being externally screw-threaded to receive the brakedrum 0, the internal periphery of which has a tapering thread to fit the thread on the tapered sleeve. The liner A consists of a fiat piece of steel or other resilient metal bent into a circular form in such a way that the two ends do not meet. In use it is sprung onto the hub D of the back wheel and the tapered sleeve B pushed over it. The tapered sleeve has aslot E cut right through it from one side to the other, so that it is capable, like the liner A, of a certain amount of compression. The liners are made of varying thicknesses to fit hubs of varying sizes and to allow of the sleeve fitting firmly thereon. When the liner A and sleeve B have been Serial No. 162,809. (No model.)

placed in position on the hub D, the brakedrum 0 is screwed onto the sleeve, with the result that both the sleeve and the liner will be compressed and gripped firmly on the hub without any possibility of slipping. The liner must be of such a thickness that the drum does not quite reach the flange of the hub upon being screwed tight. In Figs. 1 and 3 the drum is shown not screwed right home on the sleeve. The hub may be coated with some thin adhesive mixture and a little powdered resin or sand dusted onto it before placing the liner thereon.

If thought desirable, the brake-drum O can be locked upon the sleeve by means of a small screw F, inserted in the outer edge of the sleeve B, so that when screwed home its head will press against the face of the drum, and thus all liability of unscrewing is avoided.

The putting on of the brake has the effect of automatically tightening the grip upon the hub, so that the greater the strain the more effectual the grip.

It is of course obvious that my invention is applicable to any brake-drum, whether it has a circumferential V-shaped grooveor not, and it is also immaterial as to how the band is applied to the drum, as this may be efiected in any approved manner.

Having now particularly described and as-.

certained the nature of my said invention and in what manner the same is to be performed,

7 I declare that what I claim is- 1. The combination with a brake-drum provided with a tapered threaded orifice and a wheel hub, of a tapered resilient metallic band mounted upon the hub and having its ends separated, a resilient metallic tapered split sleeve, said sleeve being exteriorly screwthreaded and engaging the screw-threads of the orifice in the drum, said band and sleeve beingcapable of circumferential compression,

and an assembling device carried by the smaller end of the sleeve and engaging the outerface of thedrum to hold thelatteragainst separation from the hub. a

2. The combination with a brake-drum provided with a tapered threaded orifice and a wheel-hub, of a tapered resilient metallic band mounted upon the hub and having its ends separated, a resilient metallic tapered In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM ALBERT CORNELL.

split sleeve, said sleeve being exteriorly screwthreaded and engaging the screw-threads of the orifice in the drum, said band and sleeve' being capable of circumferential compression,

and a headed screw housed in the smaller end Witnesses: of the sleeve and having its head bearing WALTER SMYTHE BAYSTON, against the outer face of the drum. FRANK BAYSTON. 

